Device for use in routing hinge seats



y 1967 J. o. ADAMS 3,320,983

DEVICE FOR USE IN RQUTING HINGE SEATS Filed Aug. 17, 1965 2 Sheets-Sheet 1 JACK D. ADAMS My! M ATTORNEYS May 23, 1967 J. D. ADAMS 3,320,983

DEVICE FOR USE IN ROUTING HINGE SEATS Filed Aug. 17, 1965 2 Sheets-Sheet 2 JACK D. ADAMS BY A W MQM ATTORNEYS United States Patent ()fiice 3,320,983 Patented May 23, 1967 3,320,983 DEVICE FOR USE IN ROUTING HINGE SEATS Jack I). Adams, 1228 Chestnut Drive, Chico, Calif. 95926 Filed Aug. 17, 1965, Ser. No. 480,392 4 Claims. (Cl. 144-27) This invention relates generally to a device for routing hinge seats in a door and jamb, and has for one of its objects the provision of a portable, simple, rugged, economically made, easily and quickly applied device that is adapted to be connected to a door and to the jamb to which the door is to be hingedly connected, and which device includes means for accurately guiding a router for routing out the hinge seats for the leaves of the butt hinges that are to hingedly support the door from such jamb, and which device is also so constructed that the hinges may be secured to the door and jamb, after the routing step, while the door and jamb are connected by the device in the same position as they were held during the routing operation.

The pnesent device is employed in the routing out of hinge seats in a door and a jamb as one of the initial steps in making what is generally termed prehung doors. In the making of such doors, the jambs, head and sill of the door frame, and the door for the latter, may be accurately precut, and if the door is accurately hung on the desired jamb prior to the assembly of the other jamb, the head and the sill, it merely remains for said other jamb, head and sill to be connected with the one on which the door is hung and thereafter the frame with the door thereon may be quickly installed in the door opening and secured therein. The accuracy with which the door is positioned and secured to the jamb that is to support it is the factor that determines whether or not the door will swing properly in the frame when the frame is secured in the door opening, assuming, of course, that the jam bs, head, sill and door are accurately precut, and the frame is properly plumbed in the door opening.

It is recognized that large, relatively expensive machines, such as stationary mill equipment, have been designed and are used for routing hinge seats in doors and jambs, and that portable devices intended for use with routers for the same purpose have also been made. The present invention provides an economically made portable device that is substantial improvement over other portable devices and equipment of which I am aware, in that it may be more readily attached to and removed from a door and jamb than heretofore, to securely hold them properly spaced apart for securement of the hinges thereto, and when so secured to the jamb and door the routing operation including the securement of the hinges to the door and jamb may be performed without removing the device from the door and jamb thus insuring against any possible disturbance in the rela tive positions of the adjacent hinge recesses in the door and jamb before and during the securement of the hinges to the door and jamb. Also the present device is adapted for use with doors and jambs of different thicknesses and provision is made in combination wit-h a router, for making recesses of different sizes without the use of different templates.

Other objects and advantages will appear in the description and drawings.

In the drawings,

FIG. 1 is a top plan view of the device, hereafter described, in position on a door and jamb after the hinge recesses have been formed and the router removed, the dot-dash lines indicating the portion of the hinge disposed between the door and the jamb, and the screw openings in the hinge leaves. The device shown is for use in forming the recesses for the top hinge of a left hand door and the bottom hinge of a right hand door.

FIG. 2 is a side elevational view of the device of FIG. 1 as seen from the front side of the latter, which is at the same side of the device as the door to WhiCll'il; is secured, a fragment of the door and jamb being shown.

FIG. 3 is an end view of the device of FIG. 1 as seen from the left side of said view, with parts in section, and with a router supported on the device in operating position.

FIG. 4 is a cross-sectional view taken through the base plate of a conventional router with the bit in elevation and through the template and the portion of the device that supports the device in position. over a door and jamb portion of the latter being shown in crosssection.

FIG. 5 is a fragmentary view, partly in cross section, showing the pivotal action of parts of said device.

FIG. 6 is a fragmentary top plan view of a portion of FIG. 1 showing the modification for a device for use in forming the recesses for the top hinge of a right hand door and the bottom hinge of a left hand door.

In detail the device comprises a generally U-shaped base member, generally designated 1 providing a pair of spaced parallel legs or side frame elements 2 disposed in side-by-side relation and an end piece or end frame member 3 integral with and connecting said legs at one of their ends (FIG. 1).

In FIGS. 1 and 3 the door to be routed out for the hinge is designated 4 and the jamb is designated 5. Door 4 is disposed horizontally in a vertical plane. The edge to be routed out for one hinge leaf is uppermost, and will hereafter be called the upper edge. Jamb 5 is alongside and parallel with the upper edge of door 4. In the drawing the jamb 5 extends horizontally with its greatest width in a horizontal plane, and the upper side of the jamb along the edge adjacent to door 4 is rabbeted longitudinally of the jamb to provide a door stop 6 and an upper surface 7 (FIG. 3) adjoining said stop that is level with the upper edge of door 4. This surface 7 is to be recessed for the leaf of the hinge that is to be secured to the jamb.

When the device of the present invention is to be used in a routing operation, the legs 2 extend horizontally over and are supported on the upper edge of door 4 and on the surface 7, and which legs extend at right angles to said edge of door 4.

Rigid with each of legs 2 and projecting downwardly from the underside of each leg is a spacer member 8 that is adapted to extend downwardly between door 4 and jamb 5, and which member functions to properly space the door from the jamb. The said members 8 are the same, and are vertically elongated, each having a front or forward side 9 that is adapted to engage the vertical side surface of door 4 along the marginal portion of the door that faces the jamb.

The edge 10 of each member 8 that is opposite to surface 9 extends parallel with the surface 9 for a short distance below each leg 2 for engaging the surface 13 of jam-b 5 that faces the surface 9, and then the rear edge 14 of each member 8 extends slatingly downwardly and generally toward edge 9 (FIG. 4).

The use of the Words forwardly, front and any words of similar connotation are used with reference to the door, which is at the front side of jamb 5, and the words rear or rearward or the like are used to indicate the opposite of front and forwardly. Thus the end piece 3 is at the forward or front side of the device and the free ends of legs 2 are at the rear side or end of the device and face rearwardly.

Space (FIG. 4) between the jamb and door is standard for substantially all doors, hence when the legs 2 are supported on the door and jamb as described, and the latter are brought against the surfaces 9 and 10 of the spacer member 3, the door and jamb are properly spaced for routing out the hinge recesses, irrespective of the width of the jamb or the thickness of the door.

Centrally between the ends of the end piece 3 of the base member 1 is a downward projection 16 rigid with said end piece. This projection is spaced from the spacer members 8 a substantially greater distance than the thickness of the door to be recessed. A threaded aperture in said projection is adapted to threadedly receive the screw 17 of a door clamp 18 having a head 19 adapted to engage the forward side of door 4. A finger engageable wing 20 on the end of the screw 17 opposite to head 19 provides means for manually clamping the device onto a door.

The jamb-clamp for clamping the jamb 5 in the desired position for routing out the recess for a leaf of the hinge, comprises an outer U-shaped frame member generally designated 23. This member 23 is on its side and the U-shaped base member 1 is disposed between the opposite side frame members, or legs 24 of said member, while an end frame member 25 connects one of the ends of the legs 24 and is alongside and parallel with end frame member 3 of the base member 1.

A pair of coaxial horizontal pivots 26 pivotally connects the legs 24 with the downwardly projecting members 8 on said base member at the upper ends of said members 8.

Said outer frame members or legs 24 include extensions or outer end portions 27 that turn vertically downwardly adjacent to the points where the pivots 26 are located, so as to extend through the space 15 that is between the door 4 and jamb 5 when the door and jamb are against surfaces 9, 13, respectively. Terminating end portions 28 on the lower ends of extensions 27 extend horizontally in a direction away from door 4 to positions spaced below jamb 5, and vertical clamping screws 29 threadedly extend through threaded apertures in said end portions 28, each screw having a lower finger engageable wing 30 for manually rotating each screw into engagement with the lower side of the jamb for clamping the jamb tightly against the legs or side frame elements of the base member 2, thus compensating for jamb thicknesses.

The outer end frame element 25 of the outer U-shaped frame member 23 is provided with a handle 33 adapted to be grasped for swinging said outer member 25 about the axis of pivots 26. Also, centrally between the ends of the end frame element 25 is a detent 34 extending through said element and spring urged into a recess 35 formed in the outer side of the leg 3 by means of any suitable spring 36 reacting between the detent and the end frame element 25 (FIGS. 1, 3). An enlargement 37 on the outer end of the detent 34 provides means for grasping by the finger of a hand for retracting the detent 34 from recess 35 to permit swinging the frame 23 about the axis of pivots 16. The outer end surface of detent 34 and the laterally facing surface above recess 35 are preferably correspondingly bevelled to permit automatic retraction of the detent upon downward swinging of the frame 23 until the detent is horizontally aligned with the recess 35 for snapping of the detent into the recess for holding the base member and outer frame together in substantially coplanar relation to each other as seen in FIGS. 1 and 3.

A horizontally disposed template 38 having a rec-' 4 clamped to the door and jamb, as already described (FIG. 1).

The upper surface of the template 38 is horizontal and smooth and is adapted to slidably engage the lower flat surface of a horizontal base plate 43 rigidly secured on the base 44 of a conventional router 45 (FIG. 3). The base plate and base are formed with coaxial corresponding openings 46 through which the router bit 47 projects.

In the present invention an annular collar 48 is provided with a flange 49 that is adapted to be secured to base 44 with the sides of the central opening in said collar threaded and coaxial with and disposed within opening 46.

An externally threaded cylindrical sleeve 59 is threadedly connected with the internal threads in the sides of the central opening of collar 48 and extends downwardly through the opening in a template 38 so that the lower end of said sleeve clears the upper surface of base member 1 when the template is horizontal and supported on said base member. Bit 47 projects downwardly a distance equal to the depth. of the recesses to be routed out in door 4 and jamb 5 when the router is slidably supported on said template. The outside diameter of the cylindrical sleeve 59 determines the dimensions of the outlines of the recesses that are to be formed. The greater such diameter, the smaller said outline, and the less the diameter, the larger the outline. This is important since no change in the dimensions of the template is required to vary the horizontal dimensions of the recesses.

In FIG. 1 the outline of the recess formed in the door 4 is indicated at 53 and the outline of the recess in the jamb is indicated at 54-.

To change the outline of the recesses to he formed, all that is required is to substitute a sleeve of the desired diameter for forming such recesses.

Secured rigidly at one end to one of the downward projections 8 on base member 1 at approximately the juncture between said projection and the side frame member carrying said projection is a horizontally extending rod 55 (FIG. 3) on which a gauge 56 is slidably mounted for movement to different distances from the base member (FIG. 1). The said gauge includes a manually actuatable set screw 57 for securing said gauge rigid on rod 55 in its adjusted position.

Gauge 56 includes a pair of arms 58, 59 extending normal to and oppositely outwardly from rod 55. In positioning the main assembly including the base member 1 on the door and jamb, it is customary for the upper hinge to be positioned seven inches from the upper end edge of the door when the latter is hung, and approximately 7 /3 or 7 inches from the head piece of the door frame. The jamb 5 is formed with a shoulder 60 facing outwardly of the jamb in a direction longitudinally of the latter on which the head piece (not shown) is seated, and arm 58 is provided with a piece 61 on the side of the arm that is adapted to engage said upper end edge of the door. This piece may be A; or of an inch in thickness, or a thickness equal to whatever clearance is desired between the upper end edge of the door and the head of the door frame.

The designation upper end edge or lower end edge here refers to the end edges when the length of the door is vertical and in normal position in a vertical door frame. The upper recesses and lower recesses will refer to the recesses adjacent to the upper end edge of the door and the lower end edge, respectively.

Thus, when gauge 56 is secured on the rod 55 in the desired position so that the edge of recess 53 that is nearest to the upper end edge of the door will he, say seven inches, the recesses formed in the door and jamb will be correctly positioned for the hinge, and the recess in the jamb will be slightly farther from the shoulder at according to the thickness of piece 61 to provide the desired clearance.

The distance between the lower recesses in a door and jamb for the leaves of a lower hinge is usually eleven inches, and it is preferable that a second device, substan- 'l O tially a duplicate (FIG. 6) of the one already described, be provided, with a rod 63 rigid with and projecting from the side of the base member 1 opposite the side from which rod 55 projects, which rod 63 is provided with a gauge 63 corresponding to gauge 56. This gauge will be set for positioning the template at a distance from the lower end edge of the door so that the recess formed will be eleven inches from the lower end edge of the door, with the lower end edge of the jamb positioned a slightly greater distance away from the template.

Inasmuch as the overall length of the average door in a house is between six and seven feet, while other doors, such as garage doors may be seven feet in height, it is obvious that to provide a seven or eight foot rod on a device of the character described, or for a pair of such devices, would no longer be a compact tool. The present device is so simple and economical to make and use, that it is more practical and time saving for the operator to employ a pair of the assemblies, one having rod 55 and a gauge therein, and the other having a rod 63 and a gauge therein. These assemblies may have the gauges preset for the required distances.

One assembly of such pair of devices is adapted to be used for forming the recesses for the top hinge of a right hand door, and the recesses for the bottom hinge at a left hand door, while the other assembly or device of the pair is adapted for use in forming the recesses for the top hinge of a left hand door and the recesses for the bottom hinge of a right hand door.

Should the door require three hinges it is a simple matter to measure for the intermediate hinge and clamp a device in a position for routing out the recesses for such hinge. However, as will appear later, the device in such a case is used principally for use of the template, since the door and jamb may be secured together by the hinges at that time.

In operation, the door and jamb are clamped together, preferably at opposite ends, by the device described, each being connected with the door and jamb. Thus the door and jamb are parallel and the templates 38 are in exactly the correct positions for guiding the router bit to rout out the recesses 53, 54. The jamb may be supported on a bench or on any other suitable support 64 (FIG. 4) at the desired height, and the door may be supported on the floor or by a vise or in any other suitable manner.

The router, with the desired sleeve 50 therein, is then supported on the template 38 and manually slid or moved onthe template to completely rout out the recesses 53, 54.

This may be done for the top and bottom hinges before securing the hinges in position, or a hinge may be secured in each pair of recesses immediately after they are formed.

After the pair of recesses 53, 54 are formed and the template swung upwardly and to one side, the hinge may be dropped in place with the leaves thereof in the recesses before releasing the door and jamb clamps. In this manner no possible misalignment of the recesses can occur. The movement of the template out of the way provides ample room for placing the hinge in place and applying the screws.

The clamps 18, 29 are then released and after manual release of the releasable locking means, such as detent 34, from the base member, the outer frame 23 may be swung upwardly so as to swing the jamb clamp 29 to a position below space 15 between the door and jamb so that the clamping assembly, as a unit, may be lifted from the door and jamb.

It is pertinent to note that the same template may be used for hinge recesses of various sizes without making any adjustment of the device, and the device is adapted to be used on doors and jambs of various thicknesses without altering the device or removing and replacing any of its parts. Also the device rigidly holds the hinge receiving portions of the door and jamb properly positioned and spaced for routing out the hinge recesses therein and during securement of the hinge leaves in the recesses without 6 releasing the door and jamb or in any way changing their position relative to each other, and the device is readily removable from the door and jamb, as a unit, immediately upon releasing the door and jamb clamps.

While a support 64 is shown in FIG. 3, it should be noted that this is not essential, since the door only needs clamping or holding in a vertical position. The device is first attached to the door and then the jamb may be inserted into its relative position to the door as shown in FIG. 3 without the use of a support 64 and the jamb will be held and clamped in said position by the jambclamping portion. This is the preferred procedure.

While there has been described a preferred embodiment of the invention, it will be understood that further modifications may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

I claim:

l. A portable device for use in routing out recesses respectively in the inner edge surface of a door and in the surface of a jamb from which the door is to be hung to provide seats for the leaves of a butt hinge to connect said door and jamb comprising:

(a) a horizontal base member;

(b) a jamb-clamp and a door-clamp respectively carried by said base member in a jamb-clamping position, and in a door-clamping position for releasably holding a horizontally disposed jamb and a door bclow and against said base member and stationary relative to said member in a routing position in sideby-side parallel relation with said surfaces respectively on said jamb and door coplanar facing up wardly and spaced apart the same distance as when said leaves are seated in the recesses to be formed in said surfaces;

(c) said door-clamp being supported on said base member at one lateral side of said door when in said doorclamping position for movement away from said one side to free said base member for lifting from said door when said door-clamp is so moved away from said one side;

(d) said jamb-clamp including a jamb-clamp support supporting said jamb-clamp below said jamb for upward movement against the underside of said jamb when in said jamb-clamping position and for downward movement to a jamb-releasing position;

(e) said jamb-clamp support supporting said jambclamp for movement relative to said base member and said jamb and door to a position below the space between said surfaces on said jamb and door when said jamb-clamp is moved from the jamb-clamping position to said jamb-releasing position for upward movement of said jamb-clamp through said space when said door clamp is released from said door to enable said base member to be lifted from said door after said door clamp is released from said door;

(f) and a horizontal template on said base member extending over said surfaces when said base member is clamped to said jamb and door, said template being formed with an opening through which said surfaces are exposed and through which a router bit is adapted to extend to said surfaces to rout out said recesses, and the edges of said opening defining the outer limits of movement of such bit for forming hinge receiving recesses corresponding in outline to the outlines of the leaves of said butt hinge.

2. A portable device for use in routing out recesses respectively in the inner edge surface of a door and in the surface of a jamb from which said door is to be hung to provide seats for the leaves of a hinge to connect said door and jamb comprising:

(a) a horizontally disposed base member disposed on its side having a pair of horizontally extending side frameelements in spaced side-by-side relation and an end frame element connecting one of the ends of said side frame elements;

(b) said side frame elements being adapted to extend transversely over and supported on the inner edge surface of a door when the latter extends horizontally, and across and on the hinge receiving surface of a jamb when the latter is parallel with and along side said inner edge surface with the latter and said inner edge surface horizontally coplanar and spaced apart a distance that is the same as when said hinge connects said door and jamb, and said jamb and door when so related to each other being in a routing position;

() spacing means rigid with said base member depending therefrom for spacing said inner edge surface from said hinge receiving surface when said jamb and door are in said routing position;

(d) an outer frame member Within which said base member is disposed having outer side frame mem bers respectively alongside and outwardly of said pair of side frame elements, and an outer end frame element connecting one of the ends of said outer side frame members and extending alongside said frame member outwardly thereof, said outer side frame members including extensions thereof extending downwardly in the space between said edge surface of said door and said hinge receiving surface on said jamb when said door and jamb are in said routing position with said side frame elements on said surfaces and extending across said space between said door and jamb;

(e) jamb clamps on said extensions supported thereon below such jamb for upward movement to clamp such jamb between said side frame elements and said clamps, and for downward movement away from such jamb to 21 released position;

(f) a clamp on said outer end frame member supported thereon along the lateral side of said door that faces outwardly of said spacing means, said clamp being movable laterally toward said spacing means to clamp said door against the latter, and movable away from said door to a released position;

(g) coaxial pivots connecting said side frame members and said outer side frame members at points intermediate the ends of the latter for swinging said jamb clamps downwardly and to positions below the space between said door and jamb.

3. A portable device for use in routing out recesses respectively in the inner edge surface of a door and in the surface of a jamb from which the door is to be hung to provide seats for the leaves of a hinge to connect said door and jamb, comprising:

(a) a horizontal base member;

(b) a jamb-clamp and a door-clamp respectively carried by said base member in clamping positions relative to such jamb and door for releasably holding a horizontally disposed jamb and a door below and against said base member, and stationary relative to said member, in a routing position in side-by-side parallel relation with said surfaces respectively on said jamb and door coplanar facing upwardly and spaced apart the same distance as when said leaves are seated in the recesses to be formed in said surfaces;

(c) a horizontal template having an opening formed therein, the edges of which define the outer limits of movement of a vertical router bit adapted to extend through said opening, and within which limits recesses corresponding in outlines to the outlines of said leaves are adapted to be formed when said template is in a guiding position extending over said surfaces;

(d) means on said base member supporting said template in said guiding position over said surfaces with the portions of said surfaces to be recessed fully exposed for routing out by a router but extending through said opening, when said jamb clamp and said door clamp are in said clamping position with said base member rigidly held to said jamb and door;

(e) means connecting said template to said base member for movement of said template relative to said base member and door from said guiding position to an inoperative position to one side thereof free from obstructing the positioning and securing of the pivotally connected leaves of such hinge in the recesses formed in said surfaces by such bit while said jambclamp and said door-clamp are in said clamping positions;

(f) said base member being generally U-shape providing a pair of spaced generally similarly extending legs and an end member connecting one of the ends of said legs, and said legs and end member being generally in a horizontally disposed plane with said legs adapted to extend transversely over and in engagement with said surfaces;

(g) said template being supported on said legs with the opening therein over the space between said legs.

4. A portable device for use in routing out recesses respectively in the inner edge surface of a door and in the surface of a jamb from which the door is to be hung to provide seats for the leaves of a hinge to connect said door and jamb, comprising:

(a) a horizontal base member;

(b) a jamb-clamp and a door-clamp respectively carried by said base member in clamping positions relative to such jamb and door for releasably holding a horizontally disposed jamb and a door below and against said base member, and stationary relative to said member, in a routing position in side-by-side parallel relation with said surfaces respectively on said jamb and door coplanar facing upwardly and spaced apart the same distance as when said leaves are seated in the recesses to be formed in said surfaces;

(c) a horizontal template having an opening formed therein, the edges of which define the outer limits of movement of a vertical router bit adapted to extend through said opening, and within which limits recesses corresponding in outlines to the outlines of said leaves are adapted to be formed when said template is in a. guiding position extending over said surfaces;

(d) means on said base member supporting said template in said guiding position over said surfaces with the portions of said surfaces to be recessed fully exposed for routing out by a router but extending 1 through said opening, when said jamb clamp and said door clamp are in said clamping position with said base member rigidly held to said jamb and door;

(e) means connecting said template to said base member for movement of said template relative to said base member and door from said guiding position to an inoperative position to one side thereof free from obstructing the positioning and securing of the pivotally connected leaves of such hinge in the recesses formed in said surfaces by such bit while said jambclamp and said door-clamp are in said clamping positions;

(f) a rod stationarily secured at one end only to said base member and projecting horizontally therefrom in a direction longitudinally of said door when said base member is clamped to said door along its said inner edge surface;

(g) a gauge member supported by said rod for longitudinal movement on the latter to different distances from said base member in which said gauge member has door and jamb engaging portions respectively extending across one end of said door and across the terminating end surface of such jamb against which the head piece of the door frame for such door is adapted to be positioned, when said base member is 10 clamped to said jamb and door for positioning said References Cited by the Examiner template at a desired predetermined distance from UNITED STATES PATENTS said end of said door and said terminating end surf 2,355,603 8/1944 Zern 144-27 (h) the door engaging surface on said door engaging 5 3,082,800 3/1963 Soss 144-27 portion of said gauge member being closer to said 3,184,859 5/1965 Patrick template than the surface on said jamb engaging portion that is adapted to engage said terminating WILLIAM W. DYER, JR., Primary Examiner. end surface by an amount equal to the clearance desired between said door and the head piece of the w R ZLOTNIK, Examiner.

frame therefor when the frame is assembled. 

1. A PORTABLE DEVICE FOR USE IN ROUTING OUT RECESSES RESPECTIVELY IN THE INNER EDGE SURFACE OF A DOOR AND IN THE SURFACE OF A JAMB FROM WHICH THE DOOR IS TO BE HUNG TO PROVIDE SEATS FOR THE LEAVES OF A BUTT HINGE TO CONNECT SAID DOOR AND JAMB COMPRISING: (A) A HORIZONTAL BASE MEMBER; (B) A JAMB-CLAMP AND A DOOR-CLAMP RESPECTIVELY CARRIED BY SAID BASE MEMBER IN A JAMB-CLAMPING POSITION, AND IN A DOOR-CLAMPING POSITION FOR RELEASABLY HOLDING A HORIZONTALLY DISPOSED JAMB AND A DOOR BELOW AND AGAINST SAID BASE MEMBER AND STATIONARY RELATIVE TO SAID MEMBER IN A ROUTING POSITION IN SIDEBY-SIDE PARALLEL RELATION WITH SAID SURFACES RESPECTIVELY ON SAID JAMB AND DOOR COPLANAR FACING UPWARDLY AND SPACED APART THE SAME DISTANCE AS WHEN SAID LEAVES ARE SEATED IN THE RECESSES TO BE FORMED IN SAID SURFACES; (C) SAID DOOR-CLAMP BEING SUPPORTED ON SAID BASE MEMBER AT ONE LATERAL SIDE OF SAID DOOR WHEN IN SAID DOOR-CLAMPING POSITION FOR MOVEMENT AWAY FROM SAID ONE SIDE TO FREE SAID BASE MEMBER FOR LIFTING FROM SAID DOOR WHEN SAID DOOR-CLAMP IS SO MOVED AWAY FROM SAID ONE SIDE; (D) SAID JAMB-CLAMP INCLUDING A JAMB-CLAMP SUPPORT SUPPORTING SAID JAMB-CLAMP BELOW SAID JAMB FOR UPWARD MOVEMENT AGAINST THE UNDERSIDE OF SAID JAMB WHEN SAID JAMB-CLAMPING POSITION AND FOR DOWNWARD MOVEMENT TO A JAMB-RELEASING POSITION; 